Absorbance - Study guides, Class notes & Summaries
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Harr: Clinical Chemistry Questions and Answers Rated A+
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Harr: Clinical Chemistry Questions and Answers Rated A+ 
Which formula correctly describes the relationship between absorbance and %T ? 
A. A = 2 - log %T 
B. A = log 1/T 
C. A = -log T D. All of these options D. All of these options 
D Absorbance is proportional to the inverse log of transmittance. A = -log T = log 1/T Multiplying the numerator and denominator by 100 gives: A = log (100/100 X T) 100 X T = %T, substituting %T for 100 X T gives: A = log 100/%T A = log 100 - log %T 
A = 2.0 - log ...
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AMT MT ASCP/ exam 2023/2024 with 100% correct answers
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In absorption spectrophotometry: 
 A) Absorbance is directly proportional to transmittance 
 B) Percent transmittance is directly proportional to concentration 
 C) Percent transmittance is directly proportional to the light path length 
 D) Absorbance is directly proportional to concentration - correct answer Absorbance is directly proportional to concentration 
 
Which formula correctly described the relationship between absorbance and %T? 
 A) A=2-log%T 
 B) A=2+log%T 
 C) A= -log%T - 2 
 D...
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Final Assessment for MT ASCP/AMT exam questions & answers 2024/2025
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Final Assessment for MT ASCP/AMT exam questions & answers 2024/2025 
 
 
In absorption spectrophotometry: 
 A) Absorbance is directly proportional to transmittance 
 B) Percent transmittance is directly proportional to concentration 
 C) Percent transmittance is directly proportional to the light path length 
 D) Absorbance is directly proportional to concentration - ANSWERSAbsorbance is directly proportional to concentration 
 
Which formula correctly described the relationship between absorban...
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bioc LAT2 Latest Questions and Answers Rated 100% Correct
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Select the BEST answer. 
The percentage oxyhaemoglobin in a haemoglobin solution can be 
calculated by: 
using the ratio of absorbances of oxy- and deoxyhaemoglobin at 
wavelengths where the biggest difference in absorbance readings are 
observed between the two forms. 
adding a live yeast suspension to an oxyhaemoglobin solution and observe 
the change in absorbance by spectrophotometry. 
measuring the absorbance of an oxyhaemoglobin solution using the 
wavelength that corresponds to its a...
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CHEM 209 Quiz 2 Latest Update Graded A+
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CHEM 209 Quiz 2 Latest Update Graded 
 
A+ 
 
Question: What is the chemical equation representing the reaction between Fe3+ and 
thiocyanate? 
 
- a. SCN-(aq) + Fe3+(aq) = Fe(SCN)2+(aq) 
- b. Fe3+(aq) + SCN-(aq) = Fe(SCN)2+(aq) 
- c. Fe(SCN)2+(aq) = SCN-(aq) + Fe3+(aq) 
- d. Fe(SCN)2+(aq) = Fe3+(aq) + SCN-(aq) 
- Answer: b. Fe3+(aq) + SCN-(aq) = Fe(SCN)2+(aq) 
 
Explanation: This equation shows the formation of the complex ion Fe(SCN)2+ from Fe3+ and 
thiocyanate ions. 
 
Question: Provide the...
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Ciulla: Clinical Chemistry Questions and Answers Already Passed
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Ciulla: Clinical Chemistry Questions and Answers Already Passed 
1. Which of the following lamps provides a continuous spectrum of radiant energy in the visible, near IR, and near UV regions of the spectrum? 
A. Tungsten-filament 
B. Hydrogen 
C. Deuterium D. Mercury Vapor A. Tungsten-filament 
2. Which of the following isolates light within a narrow region of the spectrum? 
A. Photomultiplier tube 
B. Monochromator 
C. Photovoltaic cell D. Detector B. Monochromator 
3. Which of the following is...
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Final Assessment for MT ASCP/AMT exam questions with correct answers
- Exam (elaborations) • 91 pages • 2023
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In absorption spectrophotometry: 
 A) Absorbance is directly proportional to transmittance 
 B) Percent transmittance is directly proportional to concentration 
 C) Percent transmittance is directly proportional to the light path length 
 D) Absorbance is directly proportional to concentration Correct Answer-Absorbance is directly proportional to concentration 
 
Which formula correctly described the relationship between absorbance and %T? 
 A) A=2-log%T 
 B) A=2+log%T 
 C) A= -log%T - 2 
 D) A=...
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bioc LAT2; Questions with Complete Solutions
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bioc LAT2; Questions with Complete Solutions 
Select the BEST answer. 
The percentage oxyhaemoglobin in a haemoglobin solution can be calculated by: 
using the ratio of absorbances of oxy- and deoxyhaemoglobin at wavelengths where the biggest 
difference in absorbance readings are observed between the two forms. 
adding a live yeast suspension to an oxyhaemoglobin solution and observe the change in 
absorbance by spectrophotometry
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MB (ASCP) Review & Exam Questions Part II solved 2024
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MB (ASCP) Review & Exam Questions Part II solved 2024 
What is the Beer-Lambert Law? 
 
the linear relationship between absorbance and concentration of an absorbing species. 
 
 
What is the Beer-Lambert Law equation? 
 
A = ebc 
 
A: absorbance 
e: molar absorptivity 
c: concentration 
b: path length 
 
 
 
DNA and RNA are absorbed at: 
 
260nm
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Analytical Principles Question and answers 100% correct
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Analytical Principles Question and answers 100% correct Analytical Principles - CSMLS 
 
What is the relationship between absorbance and transmittance? - correct answer A = 2-log %T 
 
How is transmittance defined? - correct answer the amount of light allowed to pass through a solution, which is expressed as the intensity of the light beam after it has passed through solution (I) divided by the intensity of the incident beam (Io) 
T = I/Io 
 
What is Beer's law? - correct answer absorbanc...
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